#21698D
Closest named color: Peacock Blue (#016795). oklch(49.4% 0.09 234.9), rgb(33, 105, 141).
Aa
White text reads best on this color (6.05:1).
About this color
#21698D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.090 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.019 away. White text reads best on it, at 6.05:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.46:1 |
| White text | 6.05:1 |
Values
| HEX | #21698D |
| RGB | rgb(33, 105, 141) |
| HSL | hsl(200, 62%, 34%) |
| OKLCH | oklch(49.4% 0.09 234.9) |
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 #21698D | 6.05:1 | AA | Lc -85.1 | Fine for body text |
| Black text on #21698D | 3.46:1 | AA large text | Lc 24.1 | Dividers and decoration only |
| #21698D text on white | 6.05:1 | AA | Lc 79.9 | Fine for body text |
| #21698D text on black | 3.46:1 | 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
#E2EBF1
oklch(93.5% 0.013 236.6)
-
Step 200
200
#CBDCE7
oklch(88.5% 0.024 236)
-
Step 300
300
#A6C6D9
oklch(80.9% 0.044 234.1)
-
Step 400
400
#75A8C6
oklch(70.7% 0.07 234.9)
-
Step 500
500
#4F92B8
oklch(63.1% 0.089 235.4)
-
Step 600
600
#2E7CA4
oklch(55.7% 0.097 234.9)
-
Step 700
700 (this color)
#21698D
oklch(49.4% 0.09 234.9)
-
Step 800
800
#1D5572
oklch(42.7% 0.075 235.2)
-
Step 900
900
#1F465C
oklch(37.6% 0.058 235.9)
-
Step 950
950
#132936
oklch(26.9% 0.037 236.3)
#21698D 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 | 0.054 |
| Deuteranopia (no green cones) | #495E8C | 0.046 |
| Tritanopia (no blue cones) | #007275 | 0.056 |
| Achromatopsia (no color) | #636363 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21698D
#21698D
oklch(49.4% 0.09 234.9)
- #88522B
#88522B
oklch(49.2% 0.09 54.7)
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 #21698D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.019
- Denim #3B638C ΔE 0.025
- Ocean Blue #03719C ΔE 0.029
- Sea Blue #047495 ΔE 0.032
- Muted Blue #3B719F ΔE 0.043
- Light Navy Blue #2E5A88 ΔE 0.044
- Dusky Blue #475F94 ΔE 0.047
- Denim Blue #3B5B92 ΔE 0.047
Use #21698D 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.