#00668D
Closest named color: Peacock Blue (#016795). oklch(48.1% 0.1 233.6), rgb(0, 102, 141).
Aa
White text reads best on this color (6.39:1).
About this color
#00668D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.100 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.013 away. White text reads best on it, at 6.39:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.28:1 |
| White text | 6.39:1 |
Values
| HEX | #00668D |
| RGB | rgb(0, 102, 141) |
| HSL | hsl(197, 100%, 28%) |
| OKLCH | oklch(48.1% 0.1 233.6) |
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 #00668D | 6.39:1 | AA | Lc -86.3 | Fine for body text |
| Black text on #00668D | 3.28:1 | AA large text | Lc 22.9 | Dividers and decoration only |
| #00668D text on white | 6.39:1 | AA | Lc 81.2 | Fine for body text |
| #00668D text on black | 3.28:1 | AA large text | Lc -20.7 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C9DDE8
oklch(88.6% 0.026 231.7)
-
Step 300
300
#A3C7DB
oklch(81% 0.048 232.5)
-
Step 400
400
#6EA9CA
oklch(70.7% 0.078 233.9)
-
Step 500
500
#4393BC
oklch(63.1% 0.099 233.8)
-
Step 600
600
#1B7DA8
oklch(55.6% 0.107 233.4)
-
Step 700
700 (this color)
#00668D
oklch(48.1% 0.1 233.6)
-
Step 800
800
#0F5675
oklch(42.8% 0.083 233.4)
-
Step 900
900
#17475E
oklch(37.7% 0.064 233.1)
-
Step 950
950
#0F2A37
oklch(27.1% 0.041 231.9)
#00668D 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) | #52658F | 0.061 |
| Deuteranopia (no green cones) | #415A8C | 0.050 |
| Tritanopia (no blue cones) | #007073 | 0.060 |
| Achromatopsia (no color) | #5F5F5F | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00668D
#00668D
oklch(48.1% 0.1 233.6)
- #894C20
#894C20
oklch(48.1% 0.1 53.3)
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 #00668D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.013
- Denim #3B638C ΔE 0.034
- Ocean Blue #03719C ΔE 0.037
- Light Navy Blue #2E5A88 ΔE 0.038
- Sea Blue #047495 ΔE 0.043
- Denim Blue #3B5B92 ΔE 0.047
- Dusky Blue #475F94 ΔE 0.053
- YInMn Blue #415A77 ΔE 0.054
Use #00668D 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.