#243045
Closest named color: Space Cadet (#2B2D42). oklch(30.8% 0.042 261.3), rgb(36, 48, 69).
Aa
White text reads best on this color (13.25:1).
About this color
#243045 is a dark, muted blue. In OKLCH its lightness is 31%, its chroma 0.042 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.014 away. White text reads best on it, at 13.25:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.58:1 |
| White text | 13.25:1 |
Values
| HEX | #243045 |
| RGB | rgb(36, 48, 69) |
| HSL | hsl(218, 31%, 21%) |
| OKLCH | oklch(30.8% 0.042 261.3) |
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 #243045 | 13.25:1 | AAA | Lc -102.8 | Preferred for body text |
| Black text on #243045 | 1.58:1 | Fails | Lc 0.0 | Not readable |
| #243045 text on white | 13.25:1 | AAA | Lc 99.6 | Preferred for body text |
| #243045 text on black | 1.58:1 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#CFDAEC
oklch(88.5% 0.028 260.3)
-
Step 300
300
#AFC2E1
oklch(81% 0.049 260.2)
-
Step 400
400
#85A1D2
oklch(70.6% 0.079 261.4)
-
Step 500
500
#6789C6
oklch(63% 0.1 261.6)
-
Step 600
600
#4E72B3
oklch(55.5% 0.11 261.5)
-
Step 700
700
#3F609A
oklch(49.2% 0.101 261)
-
Step 800
800
#344E7D
oklch(42.6% 0.085 261.5)
-
Step 900
900
#2E4164
oklch(37.6% 0.065 262)
-
Step 950
950 (this color)
#243045
oklch(30.8% 0.042 261.3)
#243045 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) | #283146 | 0.007 |
| Deuteranopia (no green cones) | #252E45 | 0.007 |
| Tritanopia (no blue cones) | #183437 | 0.037 |
| Achromatopsia (no color) | #303030 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #243045
#243045
oklch(30.8% 0.042 261.3)
- #3B2E16
#3B2E16
oklch(31% 0.042 81.5)
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 #243045, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.014
- Gunmetal #293241 ΔE 0.014
- Prussian Blue #1D3557 ΔE 0.033
- Dark Blue Grey #1F3B4D ΔE 0.035
- Oxford Blue #1B263B ΔE 0.039
- Midnight Green #073B4C ΔE 0.040
- Onyx #343A40 ΔE 0.047
- Dark #1B2431 ΔE 0.052
Use #243045 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.