#12435F
Closest named color: Dark Grey Blue (#29465B). oklch(36.5% 0.07 238.5), rgb(18, 67, 95).
Aa
White text reads best on this color (10.53:1).
About this color
#12435F is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.070 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.026 away. White text reads best on it, at 10.53:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.070) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.99:1 |
| White text | 10.53:1 |
Values
| HEX | #12435F |
| RGB | rgb(18, 67, 95) |
| HSL | hsl(202, 68%, 22%) |
| OKLCH | oklch(36.5% 0.07 238.5) |
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 #12435F | 10.53:1 | AAA | Lc -98.2 | Preferred for body text |
| Black text on #12435F | 1.99:1 | Fails | Lc 9.8 | Not readable |
| #12435F text on white | 10.53:1 | AAA | Lc 94.1 | Preferred for body text |
| #12435F text on black | 1.99:1 | Fails | Lc -8.4 | Not readable |
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 900.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1ECF3
oklch(93.7% 0.015 235.4)
-
Step 200
200
#C8DCEB
oklch(88.4% 0.03 240.2)
-
Step 300
300
#A2C6DF
oklch(80.9% 0.052 238.6)
-
Step 400
400
#6DA8CF
oklch(70.6% 0.084 238.5)
-
Step 500
500
#4192C3
oklch(63.1% 0.108 238.4)
-
Step 600
600
#187BAF
oklch(55.5% 0.117 238.6)
-
Step 700
700
#036897
oklch(49.2% 0.109 238.4)
-
Step 800
800
#0D557A
oklch(42.7% 0.089 238.1)
-
Step 900
900 (this color)
#12435F
oklch(36.5% 0.07 238.5)
-
Step 950
950
#0F293A
oklch(26.9% 0.045 240)
#12435F 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) | #364360 | 0.039 |
| Deuteranopia (no green cones) | #2B3C5F | 0.031 |
| Tritanopia (no blue cones) | #004A4D | 0.046 |
| Achromatopsia (no color) | #3F3F3F | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #12435F
#12435F
oklch(36.5% 0.07 238.5)
- #593414
#593414
oklch(36.4% 0.07 58.5)
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 #12435F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.026
- Charcoal #264653 ΔE 0.031
- Dark Blue Grey #1F3B4D ΔE 0.035
- Midnight Green #073B4C ΔE 0.040
- Prussian Blue #1D3557 ΔE 0.044
- Marine Blue #01386A ΔE 0.045
- Twilight Blue #0A437A ΔE 0.047
- Dark Teal #014D4E ΔE 0.051
Use #12435F 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.