#6D99DB
Closest named color: Cornflower Blue (#6495ED). oklch(67.9% 0.11 258.3), rgb(109, 153, 219).
Aa
Black text reads best on this color (7.22:1).
About this color
#6D99DB is a medium-light, moderately saturated blue. In OKLCH its lightness is 68%, its chroma 0.110 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.033 away. Black text reads best on it, at 7.22:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.22:1 |
| White text | 2.90:1 |
Values
| HEX | #6D99DB |
| RGB | rgb(109, 153, 219) |
| HSL | hsl(216, 60%, 64%) |
| OKLCH | oklch(67.9% 0.11 258.3) |
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 #6D99DB | 2.90:1 | Fails | Lc -60.6 | Content text, not long reading |
| Black text on #6D99DB | 7.22:1 | AAA | Lc 48.8 | Large or bold text, headings |
| #6D99DB text on white | 2.90:1 | Fails | Lc 55.3 | Large or bold text, headings |
| #6D99DB text on black | 7.22:1 | AAA | Lc -46.5 | 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 400.
-
Step 50
50
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#CADAF3
oklch(88.4% 0.039 259.3)
-
Step 300
300
#A6C2ED
oklch(80.8% 0.068 258.9)
-
Step 400
400 (this color)
#6D99DB
oklch(67.9% 0.11 258.3)
-
Step 500
500
#5189DD
oklch(63.1% 0.14 258.3)
-
Step 600
600
#3571CA
oklch(55.5% 0.152 258.4)
-
Step 700
700
#275EAF
oklch(49% 0.142 258.4)
-
Step 800
800
#224D8E
oklch(42.6% 0.118 258.6)
-
Step 900
900
#214171
oklch(37.7% 0.091 258.4)
-
Step 950
950
#142642
oklch(26.9% 0.058 258.9)
#6D99DB 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) | #7F9DDE | 0.025 |
| Deuteranopia (no green cones) | #7293DA | 0.016 |
| Tritanopia (no blue cones) | #39A8B0 | 0.099 |
| Achromatopsia (no color) | #979797 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6D99DB
#6D99DB
oklch(67.9% 0.11 258.3)
- #BD8F41
#BD8F41
oklch(67.9% 0.11 78.2)
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 #6D99DB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.033
- Chefchaouen Blue #4895EF ΔE 0.048
- Faded Blue #658CBB ΔE 0.055
- Dark Sky Blue #448EE4 ΔE 0.056
- Soft Blue #6488EA ΔE 0.057
- Perrywinkle #8F8CE7 ΔE 0.058
- Periwinkle Blue #8F99FB ΔE 0.066
- Greyblue #77A1B5 ΔE 0.068
Use #6D99DB 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.