#1A4151
Closest named color: Dark Blue Grey (#1F3B4D). oklch(35.5% 0.052 227.9), rgb(26, 65, 81).
Aa
White text reads best on this color (10.94:1).
About this color
#1A4151 is a dark, muted teal or cyan. In OKLCH its lightness is 35%, its chroma 0.052 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.019 away. White text reads best on it, at 10.94:1.
| Hue family | Teals and cyans |
| Lightness | dark (35%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.91:1 |
| White text | 10.94:1 |
Values
| HEX | #1A4151 |
| RGB | rgb(26, 65, 81) |
| HSL | hsl(197, 51%, 21%) |
| OKLCH | oklch(35.5% 0.052 227.9) |
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 #1A4151 | 10.94:1 | AAA | Lc -99.0 | Preferred for body text |
| Black text on #1A4151 | 1.91:1 | Fails | Lc 8.7 | Not readable |
| #1A4151 text on white | 10.94:1 | AAA | Lc 95.2 | Preferred for body text |
| #1A4151 text on black | 1.91:1 | Fails | Lc -7.5 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CBDCE4
oklch(88.4% 0.021 227.6)
-
Step 300
300
#A7C6D5
oklch(80.9% 0.04 228.7)
-
Step 400
400
#77A9BF
oklch(70.7% 0.062 227.2)
-
Step 500
500
#5193AF
oklch(63.1% 0.079 227.6)
-
Step 600
600
#327D9B
oklch(55.6% 0.086 227.9)
-
Step 700
700
#246984
oklch(49% 0.08 228)
-
Step 800
800
#20566B
oklch(42.7% 0.066 227.2)
-
Step 900
900 (this color)
#1A4151
oklch(35.5% 0.052 227.9)
-
Step 950
950
#142A33
oklch(27.1% 0.033 226.5)
#1A4151 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) | #394052 | 0.039 |
| Deuteranopia (no green cones) | #313A51 | 0.034 |
| Tritanopia (no blue cones) | #004646 | 0.033 |
| Achromatopsia (no color) | #3D3D3D | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A4151
#1A4151
oklch(35.5% 0.052 227.9)
- #523323
#523323
oklch(35.4% 0.052 47.8)
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 #1A4151, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.019
- Charcoal #264653 ΔE 0.022
- Midnight Green #073B4C ΔE 0.027
- Dark Grey Blue #29465B ΔE 0.029
- Onyx #343A40 ΔE 0.041
- Dark Teal #014D4E ΔE 0.043
- Prussian Blue #1D3557 ΔE 0.044
- Charcoal Grey #3C4142 ΔE 0.048
Use #1A4151 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.