#266C99
Closest named color: Ocean Blue (#03719C). oklch(50.9% 0.099 241.1), rgb(38, 108, 153).
Aa
White text reads best on this color (5.69:1).
About this color
#266C99 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.099 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean Blue (#03719C), ΔE 0.017 away. White text reads best on it, at 5.69:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Ocean Blue (#03719C) |
| Black text | 3.68:1 |
| White text | 5.69:1 |
Values
| HEX | #266C99 |
| RGB | rgb(38, 108, 153) |
| HSL | hsl(203, 60%, 37%) |
| OKLCH | oklch(50.9% 0.099 241.1) |
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 #266C99 | 5.69:1 | AA | Lc -83.5 | Fine for body text |
| Black text on #266C99 | 3.68:1 | AA large text | Lc 25.9 | Dividers and decoration only |
| #266C99 text on white | 5.69:1 | AA | Lc 78.2 | Fine for body text |
| #266C99 text on black | 3.68:1 | AA large text | Lc -23.6 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#CADCE9
oklch(88.5% 0.026 239.1)
-
Step 300
300
#A6C5DD
oklch(80.9% 0.048 241.5)
-
Step 400
400
#75A7CC
oklch(70.7% 0.076 241.2)
-
Step 500
500
#4E91BF
oklch(63.2% 0.097 240.7)
-
Step 600
600
#2E7AAC
oklch(55.6% 0.107 241.5)
-
Step 700
700 (this color)
#266C99
oklch(50.9% 0.099 241.1)
-
Step 800
800
#1D5478
oklch(42.8% 0.082 241.4)
-
Step 900
900
#1E4660
oklch(37.8% 0.063 239.9)
-
Step 950
950
#132938
oklch(27% 0.04 240.2)
#266C99 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) | #576D9B | 0.050 |
| Deuteranopia (no green cones) | #476298 | 0.038 |
| Tritanopia (no blue cones) | #00777C | 0.067 |
| Achromatopsia (no color) | #676767 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #266C99
#266C99
oklch(50.9% 0.099 241.1)
- #8E5722
#8E5722
oklch(50.9% 0.099 61)
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 #266C99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean Blue #03719C ΔE 0.017
- Peacock Blue #016795 ΔE 0.024
- Muted Blue #3B719F ΔE 0.026
- Sea Blue #047495 ΔE 0.028
- Denim #3B638C ΔE 0.031
- Flat Blue #3C73A8 ΔE 0.036
- French Blue #436BAD ΔE 0.043
- Mid Blue #276AB3 ΔE 0.044
Use #266C99 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.