#12658B
Closest named color: Peacock Blue (#016795). oklch(47.9% 0.095 234.9), rgb(18, 101, 139).
Aa
White text reads best on this color (6.44:1).
About this color
#12658B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.095 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.016 away. White text reads best on it, at 6.44:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.26:1 |
| White text | 6.44:1 |
Values
| HEX | #12658B |
| RGB | rgb(18, 101, 139) |
| HSL | hsl(199, 77%, 31%) |
| OKLCH | oklch(47.9% 0.095 234.9) |
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 #12658B | 6.44:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #12658B | 3.26:1 | AA large text | Lc 22.5 | Dividers and decoration only |
| #12658B text on white | 6.44:1 | AA | Lc 81.6 | Fine for body text |
| #12658B text on black | 3.26:1 | AA large text | Lc -20.3 | 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
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#CADCE8
oklch(88.5% 0.025 236.9)
-
Step 300
300
#A5C6DA
oklch(80.9% 0.045 234.7)
-
Step 400
400
#72A8C8
oklch(70.6% 0.074 235.3)
-
Step 500
500
#4A92BA
oklch(63% 0.094 235.3)
-
Step 600
600
#277CA6
oklch(55.6% 0.102 234.8)
-
Step 700
700 (this color)
#12658B
oklch(47.9% 0.095 234.9)
-
Step 800
800
#185574
oklch(42.6% 0.079 235.6)
-
Step 900
900
#1B475D
oklch(37.8% 0.061 233.4)
-
Step 950
950
#112937
oklch(26.9% 0.04 236.4)
#12658B 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) | #52648D | 0.057 |
| Deuteranopia (no green cones) | #435A8A | 0.047 |
| Tritanopia (no blue cones) | #006F72 | 0.059 |
| Achromatopsia (no color) | #5E5E5E | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12658B
#12658B
oklch(47.9% 0.095 234.9)
- #864D22
#864D22
oklch(47.9% 0.096 54.8)
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 #12658B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.016
- Denim #3B638C ΔE 0.029
- Light Navy Blue #2E5A88 ΔE 0.034
- Ocean Blue #03719C ΔE 0.040
- Denim Blue #3B5B92 ΔE 0.043
- Sea Blue #047495 ΔE 0.045
- YInMn Blue #415A77 ΔE 0.049
- Dusky Blue #475F94 ΔE 0.049
Use #12658B 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.