#2D688D
Closest named color: Denim (#3B638C). oklch(49.5% 0.085 239.3), rgb(45, 104, 141).
Aa
White text reads best on this color (6.04:1).
About this color
#2D688D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.085 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.018 away. White text reads best on it, at 6.04:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.47:1 |
| White text | 6.04:1 |
Values
| HEX | #2D688D |
| RGB | rgb(45, 104, 141) |
| HSL | hsl(203, 52%, 36%) |
| OKLCH | oklch(49.5% 0.085 239.3) |
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 #2D688D | 6.04:1 | AA | Lc -85.1 | Fine for body text |
| Black text on #2D688D | 3.47:1 | AA large text | Lc 24.1 | Dividers and decoration only |
| #2D688D text on white | 6.04:1 | AA | Lc 80.0 | Fine for body text |
| #2D688D text on black | 3.47:1 | AA large text | Lc -21.9 | 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
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CCDCE7
oklch(88.6% 0.023 237.7)
-
Step 300
300
#A9C5D9
oklch(80.9% 0.041 239.1)
-
Step 400
400
#7AA7C6
oklch(70.7% 0.066 239)
-
Step 500
500
#5791B7
oklch(63.2% 0.084 238.7)
-
Step 600
600
#3A7AA3
oklch(55.5% 0.091 239.4)
-
Step 700
700 (this color)
#2D688D
oklch(49.5% 0.085 239.3)
-
Step 800
800
#265471
oklch(42.7% 0.07 239)
-
Step 900
900
#24455C
oklch(37.6% 0.055 240.8)
-
Step 950
950
#162936
oklch(27.1% 0.035 239.7)
#2D688D 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) | #57688F | 0.046 |
| Deuteranopia (no green cones) | #4A5E8C | 0.039 |
| Tritanopia (no blue cones) | #007175 | 0.058 |
| Achromatopsia (no color) | #636363 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D688D
#2D688D
oklch(49.5% 0.085 239.3)
- #85552C
#85552C
oklch(49.4% 0.085 59.4)
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 #2D688D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.018
- Peacock Blue #016795 ΔE 0.024
- Ocean Blue #03719C ΔE 0.033
- Sea Blue #047495 ΔE 0.036
- Dusky Blue #475F94 ΔE 0.039
- Muted Blue #3B719F ΔE 0.039
- Light Navy Blue #2E5A88 ΔE 0.041
- Denim Blue #3B5B92 ΔE 0.042
Use #2D688D 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.