#21617E
Closest named color: Light Navy Blue (#2E5A88). oklch(46.6% 0.079 231.8), rgb(33, 97, 126).
Aa
White text reads best on this color (6.82:1).
About this color
#21617E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.079 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.031 away. White text reads best on it, at 6.82:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 3.07:1 |
| White text | 6.82:1 |
Values
| HEX | #21617E |
| RGB | rgb(33, 97, 126) |
| HSL | hsl(199, 58%, 31%) |
| OKLCH | oklch(46.6% 0.079 231.8) |
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 #21617E | 6.82:1 | AA | Lc -88.3 | Fine for body text |
| Black text on #21617E | 3.07:1 | AA large text | Lc 20.7 | Dividers and decoration only |
| #21617E text on white | 6.82:1 | AA | Lc 83.3 | Fine for body text |
| #21617E text on black | 3.07:1 | AA large text | Lc -18.6 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CCDCE5
oklch(88.5% 0.021 232.2)
-
Step 300
300
#A9C6D5
oklch(81% 0.038 230.3)
-
Step 400
400
#7AA8C0
oklch(70.7% 0.06 231.4)
-
Step 500
500
#5592B1
oklch(63.1% 0.079 232)
-
Step 600
600
#387C9C
oklch(55.6% 0.084 231.4)
-
Step 700
700 (this color)
#21617E
oklch(46.6% 0.079 231.8)
-
Step 800
800
#24556D
oklch(42.7% 0.066 232.5)
-
Step 900
900
#234658
oklch(37.6% 0.051 232.8)
-
Step 950
950
#152934
oklch(26.9% 0.033 233.9)
#21617E 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) | #52607F | 0.052 |
| Deuteranopia (no green cones) | #46577E | 0.045 |
| Tritanopia (no blue cones) | #00696B | 0.048 |
| Achromatopsia (no color) | #5B5B5B | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21617E
#21617E
oklch(46.6% 0.079 231.8)
- #7C4C2E
#7C4C2E
oklch(46.5% 0.078 51.8)
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 #21617E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.031
- YInMn Blue #415A77 ΔE 0.034
- Denim #3B638C ΔE 0.035
- Peacock Blue #016795 ΔE 0.037
- Petrol #005F6A ΔE 0.038
- Deep Sea Blue #015482 ΔE 0.047
- Dark Aqua #05696B ΔE 0.048
- Denim Blue #3B5B92 ΔE 0.048
Use #21617E 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.