#299DD9
Closest named color: Chefchaouen Blue (#4895EF). oklch(66.1% 0.132 237.3), rgb(41, 157, 217).
Aa
Black text reads best on this color (6.91:1).
About this color
#299DD9 is a medium-light, moderately saturated blue. In OKLCH its lightness is 66%, its chroma 0.132 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.047 away. Black text reads best on it, at 6.91:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 6.91:1 |
| White text | 3.03:1 |
Values
| HEX | #299DD9 |
| RGB | rgb(41, 157, 217) |
| HSL | hsl(200, 70%, 51%) |
| OKLCH | oklch(66.1% 0.132 237.3) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #299DD9 | 3.03:1 | AA large text | Lc -62.1 | Content text, not long reading |
| Black text on #299DD9 | 6.91:1 | AA | Lc 47.4 | Large or bold text, headings |
| #299DD9 text on white | 3.03:1 | AA large text | Lc 56.7 | Large or bold text, headings |
| #299DD9 text on black | 6.91:1 | AA | Lc -45.1 | Large or bold text, headings |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DFECF5
oklch(93.6% 0.018 237.8)
-
Step 200
200
#C4DDEE
oklch(88.4% 0.036 237.6)
-
Step 300
300
#99C8E6
oklch(81% 0.065 236.6)
-
Step 400
400
#5CAAD9
oklch(70.7% 0.103 237.2)
-
Step 500
500 (this color)
#299DD9
oklch(66.1% 0.132 237.3)
-
Step 600
600
#007CB1
oklch(55.6% 0.122 237.2)
-
Step 700
700
#006896
oklch(49.1% 0.108 237.6)
-
Step 800
800
#00557B
oklch(42.6% 0.093 237.2)
-
Step 900
900
#004768
oklch(37.7% 0.083 237.5)
-
Step 950
950
#042A3E
oklch(27.1% 0.055 237.2)
#299DD9 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #809DDC | 0.075 |
| Deuteranopia (no green cones) | #698DD8 | 0.061 |
| Tritanopia (no blue cones) | #00ACB2 | 0.084 |
| Achromatopsia (no color) | #949494 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #299DD9
#299DD9
oklch(66.1% 0.132 237.3)
- #CE7B36
#CE7B36
oklch(66.1% 0.132 57)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #299DD9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.047
- Dark Sky Blue #448EE4 ΔE 0.049
- Cornflower Blue #6495ED ΔE 0.059
- Water Blue #0E87CC ΔE 0.065
- Faded Blue #658CBB ΔE 0.065
- Turquoise Blue #06B1C4 ΔE 0.073
- Dodger Blue #1E90FF ΔE 0.073
- Blue NCS #118AB2 ΔE 0.075
Use #299DD9 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.