#00678A
Closest named color: Peacock Blue (#016795). oklch(48.1% 0.097 230.5), rgb(0, 103, 138).
Aa
White text reads best on this color (6.34:1).
About this color
#00678A is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.097 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.018 away. White text reads best on it, at 6.34:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.30:1 |
| White text | 6.34:1 |
Values
| HEX | #00678A |
| RGB | rgb(0, 103, 138) |
| HSL | hsl(195, 100%, 27%) |
| OKLCH | oklch(48.1% 0.097 230.5) |
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 #00678A | 6.34:1 | AA | Lc -86.2 | Fine for body text |
| Black text on #00678A | 3.30:1 | AA large text | Lc 23.0 | Dividers and decoration only |
| #00678A text on white | 6.34:1 | AA | Lc 81.0 | Fine for body text |
| #00678A text on black | 3.30:1 | AA large text | Lc -20.8 | 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
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C9DDE7
oklch(88.6% 0.025 229.2)
-
Step 300
300
#A3C7D9
oklch(80.9% 0.046 229.7)
-
Step 400
400
#6EAAC7
oklch(70.8% 0.075 230.1)
-
Step 500
500
#4394B8
oklch(63.1% 0.095 230)
-
Step 600
600
#1A7EA4
oklch(55.7% 0.103 229.8)
-
Step 700
700 (this color)
#00678A
oklch(48.1% 0.097 230.5)
-
Step 800
800
#0F5672
oklch(42.6% 0.08 230.7)
-
Step 900
900
#17475C
oklch(37.6% 0.062 230.6)
-
Step 950
950
#0F2A36
oklch(27% 0.04 229.8)
#00678A 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) | #55668C | 0.065 |
| Deuteranopia (no green cones) | #455A89 | 0.056 |
| Tritanopia (no blue cones) | #007173 | 0.056 |
| Achromatopsia (no color) | #5F5F5F | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00678A
#00678A
oklch(48.1% 0.097 230.5)
- #884C26
#884C26
oklch(48.1% 0.096 50.9)
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 #00678A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.018
- Denim #3B638C ΔE 0.035
- Ocean Blue #03719C ΔE 0.038
- Sea Blue #047495 ΔE 0.040
- Light Navy Blue #2E5A88 ΔE 0.041
- Denim Blue #3B5B92 ΔE 0.051
- Petrol #005F6A ΔE 0.054
- YInMn Blue #415A77 ΔE 0.054
Use #00678A 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.