#123644
Closest named color: Midnight Green (#073B4C). oklch(31.4% 0.048 227), rgb(18, 54, 68).
Aa
White text reads best on this color (12.82:1).
About this color
#123644 is a dark, muted teal or cyan. In OKLCH its lightness is 31%, its chroma 0.048 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.019 away. White text reads best on it, at 12.82:1.
| Hue family | Teals and cyans |
| Lightness | dark (31%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.63:1 |
| White text | 12.82:1 |
Values
| HEX | #123644 |
| RGB | rgb(18, 54, 68) |
| HSL | hsl(197, 58%, 17%) |
| OKLCH | oklch(31.4% 0.048 227) |
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 #123644 | 12.82:1 | AAA | Lc -102.1 | Preferred for body text |
| Black text on #123644 | 1.63:1 | Fails | Lc 0.0 | Not readable |
| #123644 text on white | 12.82:1 | AAA | Lc 98.8 | Preferred for body text |
| #123644 text on black | 1.63:1 | Fails | Lc 0.0 | 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 950.
-
Step 50
50
#F0F7F9
oklch(97.1% 0.008 216.6)
-
Step 100
100
#DFECF2
oklch(93.5% 0.016 227)
-
Step 200
200
#C4DEE9
oklch(88.5% 0.032 225.1)
-
Step 300
300
#9AC9DD
oklch(80.9% 0.057 225.9)
-
Step 400
400
#5EACCC
oklch(70.7% 0.09 226.9)
-
Step 500
500
#1C97BF
oklch(63.2% 0.115 226.4)
-
Step 600
600
#007FA4
oklch(55.6% 0.108 227.1)
-
Step 700
700
#006B8A
oklch(49.2% 0.095 226.5)
-
Step 800
800
#005772
oklch(42.6% 0.083 227.6)
-
Step 900
900
#00495F
oklch(37.8% 0.072 226.2)
-
Step 950
950 (this color)
#123644
oklch(31.4% 0.048 227)
#123644 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) | #2F3545 | 0.036 |
| Deuteranopia (no green cones) | #283044 | 0.031 |
| Tritanopia (no blue cones) | #003A3B | 0.027 |
| Achromatopsia (no color) | #323232 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #123644
#123644
oklch(31.4% 0.048 227)
- #45291C
#45291C
oklch(31.3% 0.048 45.5)
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 #123644, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.019
- Dark Blue Grey #1F3B4D ΔE 0.027
- Gunmetal #293241 ΔE 0.028
- Prussian Blue #1D3557 ΔE 0.038
- Space Cadet #2B2D42 ΔE 0.040
- Onyx #343A40 ΔE 0.047
- Oxford Blue #1B263B ΔE 0.053
- Charcoal #264653 ΔE 0.062
Use #123644 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.