#2D99E6
Closest named color: Chefchaouen Blue (#4895EF). oklch(66% 0.148 245), rgb(45, 153, 230).
Aa
Black text reads best on this color (6.81:1).
About this color
#2D99E6 is a medium-light, vivid blue. In OKLCH its lightness is 66%, its chroma 0.148 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.025 away. Black text reads best on it, at 6.81:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.148) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 6.81:1 |
| White text | 3.08:1 |
Values
| HEX | #2D99E6 |
| RGB | rgb(45, 153, 230) |
| HSL | hsl(205, 79%, 54%) |
| OKLCH | oklch(66% 0.148 245) |
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 #2D99E6 | 3.08:1 | AA large text | Lc -62.7 | Content text, not long reading |
| Black text on #2D99E6 | 6.81:1 | AA | Lc 46.7 | Large or bold text, headings |
| #2D99E6 text on white | 3.08:1 | AA large text | Lc 57.3 | Large or bold text, headings |
| #2D99E6 text on black | 6.81:1 | AA | Lc -44.5 | Non-text elements, placeholder text |
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
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DFECF7
oklch(93.7% 0.02 243.4)
-
Step 200
200
#C4DDF3
oklch(88.6% 0.04 244.8)
-
Step 300
300
#9AC6ED
oklch(80.9% 0.072 245.6)
-
Step 400
400
#5DA8E4
oklch(70.8% 0.116 244.6)
-
Step 500
500 (this color)
#2D99E6
oklch(66% 0.148 245)
-
Step 600
600
#0079BF
oklch(55.7% 0.14 245)
-
Step 700
700
#0065A1
oklch(49% 0.124 245.1)
-
Step 800
800
#005385
oklch(42.7% 0.107 244.8)
-
Step 900
900
#004570
oklch(37.7% 0.095 244.9)
-
Step 950
950
#052942
oklch(27.1% 0.061 244.2)
#2D99E6 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) | #759CE9 | 0.062 |
| Deuteranopia (no green cones) | #5A8BE5 | 0.045 |
| Tritanopia (no blue cones) | #00ACB5 | 0.104 |
| Achromatopsia (no color) | #939393 | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D99E6
#2D99E6
oklch(66% 0.148 245)
- #CE7C00
#CE7C00
oklch(66% 0.148 65.4)
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 #2D99E6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.025
- Dark Sky Blue #448EE4 ΔE 0.030
- Cornflower Blue #6495ED ΔE 0.044
- Dodger Blue #1E90FF ΔE 0.049
- Soft Blue #6488EA ΔE 0.059
- Water Blue #0E87CC ΔE 0.062
- Faded Blue #658CBB ΔE 0.073
- Cool Blue #4984B8 ΔE 0.079
Use #2D99E6 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.