#00668E
Closest named color: Peacock Blue (#016795). oklch(48.1% 0.101 234.3), rgb(0, 102, 142).
Aa
White text reads best on this color (6.38:1).
About this color
#00668E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.101 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.011 away. White text reads best on it, at 6.38:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.29:1 |
| White text | 6.38:1 |
Values
| HEX | #00668E |
| RGB | rgb(0, 102, 142) |
| HSL | hsl(197, 100%, 28%) |
| OKLCH | oklch(48.1% 0.101 234.3) |
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 #00668E | 6.38:1 | AA | Lc -86.3 | Fine for body text |
| Black text on #00668E | 3.29:1 | AA large text | Lc 22.9 | Dividers and decoration only |
| #00668E text on white | 6.38:1 | AA | Lc 81.1 | Fine for body text |
| #00668E text on black | 3.29:1 | 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
#C9DDE9
oklch(88.6% 0.027 234)
-
Step 300
300
#A3C6DC
oklch(80.8% 0.049 235.8)
-
Step 400
400
#6EA9CA
oklch(70.7% 0.078 233.9)
-
Step 500
500
#4393BD
oklch(63.1% 0.1 234.4)
-
Step 600
600
#1A7DA9
oklch(55.7% 0.109 233.9)
-
Step 700
700 (this color)
#00668E
oklch(48.1% 0.101 234.3)
-
Step 800
800
#0F5676
oklch(42.8% 0.084 234.2)
-
Step 900
900
#17475F
oklch(37.7% 0.065 234.2)
-
Step 950
950
#0F2A38
oklch(27.1% 0.042 233.9)
#00668E 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) | #526590 | 0.061 |
| Deuteranopia (no green cones) | #415A8D | 0.050 |
| Tritanopia (no blue cones) | #007174 | 0.062 |
| Achromatopsia (no color) | #5F5F5F | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00668E
#00668E
oklch(48.1% 0.101 234.3)
- #894C1E
#894C1E
oklch(48.1% 0.101 54.1)
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 #00668E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.011
- Denim #3B638C ΔE 0.033
- Ocean Blue #03719C ΔE 0.037
- Light Navy Blue #2E5A88 ΔE 0.038
- Sea Blue #047495 ΔE 0.042
- Denim Blue #3B5B92 ΔE 0.046
- Dusky Blue #475F94 ΔE 0.052
- YInMn Blue #415A77 ΔE 0.055
Use #00668E 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.