#00618F
Closest named color: Peacock Blue (#016795). oklch(46.9% 0.106 239.2), rgb(0, 97, 143).
Aa
White text reads best on this color (6.75:1).
About this color
#00618F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.106 and its hue 239°. 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 6.75:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.10:1 |
| White text | 6.75:1 |
Values
| HEX | #00618F |
| RGB | rgb(0, 97, 143) |
| HSL | hsl(199, 100%, 28%) |
| OKLCH | oklch(46.9% 0.106 239.2) |
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 #00618F | 6.75:1 | AA | Lc -87.8 | Fine for body text |
| Black text on #00618F | 3.10:1 | AA large text | Lc 21.3 | Dividers and decoration only |
| #00618F text on white | 6.75:1 | AA | Lc 82.7 | Fine for body text |
| #00618F text on black | 3.10:1 | AA large text | Lc -19.2 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF3
oklch(93.5% 0.015 241.8)
-
Step 200
200
#C9DCEA
oklch(88.5% 0.028 239.7)
-
Step 300
300
#A3C6DF
oklch(80.9% 0.052 239.4)
-
Step 400
400
#6FA8CF
oklch(70.7% 0.083 239.4)
-
Step 500
500
#4592C2
oklch(63.2% 0.105 238.9)
-
Step 600
600
#1F7BAE
oklch(55.6% 0.114 239)
-
Step 700
700 (this color)
#00618F
oklch(46.9% 0.106 239.2)
-
Step 800
800
#12557A
oklch(42.8% 0.088 239)
-
Step 900
900
#184662
oklch(37.7% 0.069 239.2)
-
Step 950
950
#102939
oklch(26.9% 0.043 239.2)
#00618F 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) | #4B6291 | 0.055 |
| Deuteranopia (no green cones) | #39568E | 0.043 |
| Tritanopia (no blue cones) | #006D71 | 0.070 |
| Achromatopsia (no color) | #5B5B5B | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00618F
#00618F
oklch(46.9% 0.106 239.2)
- #85490A
#85490A
oklch(46.9% 0.106 59)
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 #00618F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.019
- Light Navy Blue #2E5A88 ΔE 0.028
- Denim #3B638C ΔE 0.037
- Denim Blue #3B5B92 ΔE 0.039
- Dusk Blue #26538D ΔE 0.042
- Deep Sea Blue #015482 ΔE 0.042
- Ocean Blue #03719C ΔE 0.049
- Light Navy #155084 ΔE 0.050
Use #00618F 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.